The 32-year-old showed off her new hairstyle on a night out in Las Vegas and if her husband Alex Reid believes the saying that ‘blondes have more fun’, he’s likely to be worried as she was out in Sin City with Amir Khan .

Strictly speaking, the mum-of-three was actually watching a boxing match of his against Marcos Maidana – of which Khan won – in the Nevada state’s Manadaly Bay hotel and casino.

Katie looked stunning showing off her new honey-blonde locks.Wearing a low-cut top and fur-trimmed coat with her hefty cleavage on show, her image was a throwback to her former glamour modelling days.

However, her new glowing mane seems to give her a softer edge and it’s hard to remember why she ever went brunette in the first place.Even so, after spending eight hours in the hair salon, it’s no surprise she looks good.It seems her American adventure didn’t go down too well with Reid, 34, though. The cage-fighter is said to have called her in a rage for stepping out with Kahn, according to the Daily Mail.

A source said: ‘She was cackling about how the last time she was pictured with Amir it got her into trouble – but she just said “bring it on”.’